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"I just couldn't see spending that much in order to retain the factory HU".
Yeah, I don't see any sense in retaining the factory HU unless you already have alot of factory junk like NAV/DVD/XM.
Regarding cleansweep, it is described as follows:
"A particularly difficult challenge was dealing with the reality that a huge number of OEM head units now incorporate non-defeatable equalization curves aimed at correcting the response of factory speakers, as well as protecting relatively weak factory speaker systems from overload. Examples of these include bass roll-off at increasing volume settings, or severe midrange EQ to tame the response of OEM speakers. With previous integration solutions, even if an auto sound installer was able to find suitable analog audio coming out of the OEM head unit (or amplifier), the consumer could end up with severely compromised aftermarket audio due to OEM equalization (garbage in, garbage out)."
Per eakes' description of prior post, what is the point if the output of the factory HU is flat (no OEM equalization)?
Or what if any OEM equalization for the RF system was associated with the RF amp, downstream from the HU?
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